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| Gaseous Exchange in Frog |
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| Frogs respire through skin as well as the lungs. The oxygen rich air enters the skin or lungs. From here the blood picks up the oxygen and transports it to the tissues of various organs. From the tissues the blood picks up carbon dioxide and transports it back to the skin or the lungs from where it is expired into the outer atmosphere. |
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| Frog Lungs |
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| Blood in the Capillaries Surrounding Tissues |
| Exchanges Respiratory Gases with Cells of the Tissue |
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